Miley Cyrus appeared on 'Late Night With Jimmy Fallon' this week to promote 'Bangerz' and to show off her "gets it" personality. The singer performed an a cappella version of 'We Can't Stop' as the center square in a 'Brady Bunch'-style …

Mariah Carey's version of "All I Want For Christmas Is You" is notably one of the most popular Christmas songs ever. Vocally, she can do no wrong. Mariah recently joined Jimmy Fallon and The Roots for an interesting, yet entertaining cover of the hit.